Synthesis of difluorosubstituted six-membered nitronates via an addition/substitution cascade
作者:Oleg V. Fedorov、Vitalij V. Levin、Alexander D. Volodin、Marina I. Struchkova、Alexander A. Korlyukov、Alexander D. Dilman
DOI:10.1016/j.tetlet.2016.06.135
日期:2016.8
A method for the synthesis of 5,5-difluorosubstituted six-membered nitronates by the coupling of 2-bromo-1,1-difluoroethyl ketones with nitro alkanes is described. The reaction is mediated by 1,8-diazabicycloundec-7-ene and proceeds as a sequence of nitronate anion addition at the carbonyl group and intramolecular nucleophilic substitution of bromine.
描述了通过2-
溴-1,1-二
氟乙基酮与硝基
烷烃的偶合来合成5,5-二
氟取代的六元
磺酸盐的方法。该反应由1,8-二氮杂双
环十一烷基-7-烯介导,并以在羰基上的
亚硝酸根阴离子加成和
溴的分子内亲核取代的序列进行。